Jervell and Lange-Nielsen syndrome, a type of long QT syndrome, causes the cardiac muscle to take longer than usual to recharge between beats. If untreated, the irregular heartbeats, called arrhythmias, can lead to fainting, seizures, or sudden death. The disorder also contributes to hearing loss.
Read more about Jervell And Lange-Nielsen Syndrome: Genetic Prevalence, Treatment
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